Well I have had some issues since picking up my 05' a little over a month ago. It came with a 3.4" intense pulley and everybody said "you'll blow it up" so not being able to get a 3.8" until mid-late May I went with a 3.6" then through the board found someone with a 3.8" ZZP pulley. Not that anything made a difference. I popped the hood the other day while it was running and noticed that the pulley is not concentric as mounted. It ran true when I installed it and I can't remember if the center tit on the hub was as tight as it was with the Intense pulley. When I called about my 3.8" I had ordered I was told they were out. I had already paid for the Intense pulley and faster shipping, explained I needed it ASAP and was offered a 3.6" Intense or a 3.8" ZZP. Well I went with the 3.6" well it was still said I needed a 3.8" so I bought one.

is there a difference between the intense and ZZP hubs? When the guy at Intense offered to sell me a ZZP I figured they were the same. The runout is probably right about .060"

Jeff

PS it's not the bearings.